Pipe-coupling.



F. W. ERICKSON.

PtIPE COUFLING. APPucATioN FILED MAR. 21, |917.

:PL @p 99% Patented Sept. 4, 1917.

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ATTORNEY.

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FREDERIC ERICKSON, OF NEW YGRK, N'. Y.

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Specification of Letters Patent.

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Application led March 21, 1917. Serial No. 156,323.

'o all 'whom it may concern Be it known that I, FREDERIC XVM. EnronsoN, residing at New York, in the county of New York and State of New York, have invented certain Improvements in Pipe-Couas motors, lamps, telephones, etc.

It is required that such pipes or conduits shall be moisture-proof and that their interior surfaces shall be even andl smooth and free from roughness, in order that the conductors may be drawn therethrough without undue friction and their insulation be unimpaired. i

The device consists essentially of two main parts or members arranged serially on a common axis, the principal or outer member being a continuous shell or hollow cylinder one-half of whose length is `of less diameter than the other part, and having an internally screw-threaded orifice, and externally is provided with horizontal ridges serving as grasping means for a wrench. The opposite portion or half of the shell has an interior diameter greater than that of the rst half, and its outer end is partly closed by a lip, thus creating a chamber. At the meeting ofthe two diameters inside the shell there is formed an abutment (having lugs on its outer face) between which and the said lip, in the chamber, is an internally threaded thimble adapted to play back and forth loosely therein, having lugs on its inner edge to engage the corresponding lugs of the abutment.

The device is so constructed that the end of one pipe may be screwed into one end of the device while it is held firmly by a Wrench, and a second pipe end may be screwed into the thimble which may have a rotary and a horizontal motion independently of the said shell.

l will now describe the device in particular, reference being made to the accompany- ,ing drawings in which- Figure l is a perspective view of the same; Fig. 2 is a horizontal section of the device;

Fig. 3 is an end view of Fig. Q;

Fig. 4L is a perspective view of the thimble;

Fig. 5 is a perspective view of the principdal member while in incompleted form, an

Fig. 6 is a modified form of the principal member partly in section.

In the drawings A is'the outer member, tubular in form, one half its length a being of less diameter than the other half Z) and internally screw-threaded and its exterior having the horizontal ribs c, whose apexes are level with the diameter of the part Z). The hollow interior or chamber It of the part Y) is of greater diameter than the screwthreaded interior of a and their junction provides the abutment m in which are the depressions f and lugs f2, and the chamber is partly closed by the lip r. The member is formed with the end b extending outward as shown in Fig. 5, and notched or castellated as g.

lVithin the chamber 71, is a second tubular member B, internally screw-threaded, concaved as n at one end and having on the opposite end lugs e and alternate depressions e2, which are adapted to iit into the lugs and depressions in the abutment m. The member or thimble B is placed in the chamber 71. and

thc castellated extensions g are bent over and brought close to each other and forni the lip r, their inner corners entering the concave n of the thimble. The thimble or nut is shorter `than the chamber 7b, so that it 1 can be moved into and out of clutch with the abutment. r

-be some provision whereby relative longitudinal movement may be obtained. For instance, when the coupling is brought into endwise engagement with pipe p2, a slight push insures interengagement of lugs e, f2, so that by rotation of the coupling or said pipe the inner member B can be screwed onto said pipe. Then a pull will disengage said lugs so that when a pipe p is engaged with the coupling member A the said member can be rotated (Without rotating member B) to draw pipe p until its end abuts the end of the previously introduced pipe p2. Since the thimble member B is shorter than the chamber L, as above stated, it can move endwise in said chamber to permit the clutching and unclutching when manipulating the parts asujust de-4 scribed. A l

Fig. 6 represents the Castella-tions g3 With straighter slits s and having their ends turned inward as hooks to provide, when bent over, an inclosing lip or rim which when pressed against the concave end n closes the chamber /L against moisture.

A conduit pipe j? can be screwed into the end ci by holding it by a wrench, and a second pipe can be screwed into thesleeve or internal nut B, by pressing `the latter inward and causing the lugs on its edge to pressv into the depressionson the abutment, while the device is held firmly by a wrench, and when the pipe is screwed into the nut the full distance a pull on the member A willrelease the nutso as to permit it to rotate independentlyT of the main member; this revolving feature is also favorable to the insertion of the pipe p.

I claim as my inventionl. A coupling for pipes, consisting` of two members, one of which incloses the other, the i-nclosing member having an internal screw-threaded orice at one end thereof and a chamber at the opposite end partially closed by a lip, an inclosed internally screwthreaded thimble within said chamber and movable endwise therein, with separable means for locking the inclosing and inclosed members to each other.

2. A coupling `for pipes consisting of two members, one of which inclose's the other, the inclosing member having an `internal screw-threaded orifice at one end thereof, and a chamber at the opposite end partially closed by a lip, an abutment at the juncture of the orifice and chamber provided with one o r more lugs, an inclosed internally threaded thimble within said chamber 'and movable endwise therein, with means on its inner end to engage said lugs to interlock the said members.

3. A coupling for-pipes consisting of two members, one of which incloses the other, they inclosing member having external wrenchz gripping means, an internal screwthreaded orifice at one end thereof, anda ,chamber Ol greater diameter than said oriiice at the opposite end partially closed by a lip, an abutment at the juncture of the orifice and chamber provided with one. or more lugs, an inclosed internally threaded thimble within said' chamber and movable endwise therein, with means at its inner edge to engage said lugs to interlock th said members.

Ll. A coupling` for pipes consisting of two members, one 'of which incloses the other, the inclosing member having an internal screw-threaded orifice at one end; thereof, and a chamberat the opposite end partially closed by a lip composed of the serrated or castellated end :of the inclosing memberl bent over and inward, an inclosed internally screw-threaded thimble` withinsaid cham' ber and movable endwise therein, with sepf arable means for locking theq inclosing and inclosed members to each other.

5. A pipe coupling comprising a single outer member and av single inner. member permanently connected and longitudinally movable tol a limited degree relatively to `said other, said members. having internally threaded portions of substantially the same diameter in alinenent. y

In testimony whereof, l] have signed my name to this specification in the presenceof two' subscribing witnesses, this,19th day of March 1917.

FREDERIC WVM. ERICKSON. Witnesses: i

' E. A. DUBLIN, H. M. TAYLOR.

Copies of this patent may be obtained, for 4live cents each, by addressing the Commissioner orjfatents,

Washington, D. G. 

